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Solutions for Archiving Sensitive Data in the Cloud Featured

Solutions for Archiving Sensitive Data in the Cloud "CD DVD compact optical disk storage medium with dust and scratches. Rainbow spectrum of iridescent colors"

Many businesses and individuals are familiar with the concept of cloud backups. All major providers as well as consumer manufacturers like Apple offer easy methods with which to back up data to cloud storage. Using the provider’s resources eliminates the need for clients to purchase hardware and keeps backups offsite where they are safely separated from the original data.

Archiving data is sometimes confused with backing it up. While both processes are used to store data, the reasons for performing them are very different. Backups are created primarily for recovering systems and data in the aftermath of unforeseen events. Backups make copies of existing data that can be used to easily replace lost or corrupt files.

Archives are used for the longterm storage of specific data elements that are needed to satisfy legal or regulatory requirements. An archive may be the only copy of the given data, making it critically important that it is stored safely and protected against possible loss. Archived data often contains sensitive or personally identifying information, making it imperative that it is stored securely to meet privacy regulations. 

Differences in Data Availability 

The difference in why backups and archives are created affects issues such as how they are stored and the speed at which they need to be accessed. Backups need to be readily available to address unexpected outages or data loss scenarios. Mission-critical systems are often configured to immediately fail over to backups to avoid or minimize downtime.  

Archived data normally does not need to be accessed as rapidly as does backup data. Information needed to provide evidence to auditors or furnish documentation for corporate lawyers usually has less demanding time requirements. Retrieval of the necessary data can be scheduled so it is available when needed. In the majority of cases, archived data does not need to be immediately available. 

Choosing a Cloud Archiving Solution 

The following factors need to be considered when selecting a cloud archiving solution.  

  • Data security and durability - Since a single copy of important data is often archived, the provider needs to ensure the data won’t be lost, corrupted, or access by unauthorized personnel. 
  • Integrated compliance management - Archival data subject to regulatory guidelines needs to be appropriately managed by the cloud provider. 
  • Storage location - In some cases, data needs to be stored in specific geographical regions to satisfy compliance requirements. 
  • Data access time - Various cloud vendors provide different access times for archived data versus other types of storage.  

Following are two examples of the archive offerings of major cloud providers. 

Amazon S3 Glacier and S3 Glacier Deep Archive

This offering by Amazon Web Services (AWS) promises 99.999999999% data durability with comprehensive security and compliance capabilities. The cost of storage can be as low as $1 per terabyte per month. Glacier has three access tiers that range from a few minutes to several hours. Deep Archive has two options that return data in 12 or 48 hours.  

Google Cloud Nearline, Coldline, and Archive

Google offers three archival solutions to address the varying needs of accessing archived data. They promise low latency and availability of archived data, with a low cost per gigabyte and 99.999999999% durability of objects over a given year. Data is protected by Google-grade security and redundant storage. 

The cloud offers a viable method of archiving sensitive data without incurring the capital costs of procuring additional on-premises storage. Organizations with archiving needs should investigate how the cloud can satisfy them.














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 Robert Agar

I am a freelance writer who graduated from Pace University in New York with a Computer Science degree in 1992. Over the course of a long IT career I have worked for a number of large service providers in a variety of roles revolving around data storage and protection. I currently reside in northeastern Pennsylvania where I write from my home office.

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